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Current content: 158 251 954 patent documents

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1 828 765 documents amended

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EP 0048080 B1 19880706 - POLYIMIDES

Title (en)

POLYIMIDES

Publication

EP 0048080 B1 19880706 (EN)

Application

EP 81303041 A 19810703

Priority

US 18666880 A 19800912
US 25413781 A 19810414
US 25413881 A 19810414
US 26745981 A 19810527
US 26746081 A 19810527

Abstract (en)

[origin: EP0048080A2] Terpolyimides are prepared from tetracarboxylic acid esters and combinations of heterocyclic aromatic, and aliphatic diamines. Precursors, and methods of converting them to the corresponding terpolymers are described. The terpolyimides are useful as foams.

IPC 1-7

C08G 73/10

IPC 8 full level

C08G 73/10 (2006.01); C08J 9/02 (2006.01)

CPC (source: EP)

C08G 73/1007 (2013.01); C08G 73/1028 (2013.01); C08J 9/02 (2013.01); C08J 2379/08 (2013.01)

Citation (examination)

US 30213 A 18601002

Designated contracting state (EPC)

CH DE FR GB IT LI NL SE

DOCDB simple family (publication)

EP 0048080 A2 19820324; EP 0048080 A3 19820804; EP 0048080 B1 19880706; CA 1198546 A 19851224; DE 3176805 D1 19880811

DOCDB simple family (application)

EP 81303041 A 19810703; CA 385181 A 19810903; DE 3176805 T 19810703